diff options
Diffstat (limited to 'generic/tkTextDisp.c')
| -rw-r--r-- | generic/tkTextDisp.c | 59 |
1 files changed, 35 insertions, 24 deletions
diff --git a/generic/tkTextDisp.c b/generic/tkTextDisp.c index 11f9552..c541c32 100644 --- a/generic/tkTextDisp.c +++ b/generic/tkTextDisp.c @@ -11,7 +11,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkTextDisp.c,v 1.13 2002/08/05 04:30:40 dgp Exp $ + * RCS: @(#) $Id: tkTextDisp.c,v 1.14 2002/11/22 23:25:19 hobbs Exp $ */ #include "tkPort.h" @@ -3347,11 +3347,17 @@ TkTextSeeCmd(textPtr, interp, argc, argv) /* * Find the chunk that contains the desired index. + * dlPtr may be NULL if the widget is not mapped. [Bug #641778] */ dlPtr = FindDLine(dInfoPtr->dLinePtr, &index); + if (dlPtr == NULL) { + return TCL_OK; + } + byteCount = index.byteIndex - dlPtr->index.byteIndex; - for (chunkPtr = dlPtr->chunkPtr; chunkPtr!=NULL ; chunkPtr = chunkPtr->nextPtr) { + for (chunkPtr = dlPtr->chunkPtr; chunkPtr != NULL ; + chunkPtr = chunkPtr->nextPtr) { if (byteCount < chunkPtr->numBytes) { break; } @@ -3361,35 +3367,40 @@ TkTextSeeCmd(textPtr, interp, argc, argv) /* * Call a chunk-specific procedure to find the horizontal range of * the character within the chunk. + * chunkPtr is NULL if trying to see in elided region. */ - if (chunkPtr!=NULL) { /* chunkPtr==NULL iff trying to see in elided region */ - (*chunkPtr->bboxProc)(chunkPtr, byteCount, dlPtr->y + dlPtr->spaceAbove, - dlPtr->height - dlPtr->spaceAbove - dlPtr->spaceBelow, - dlPtr->baseline - dlPtr->spaceAbove, &x, &y, &width, - &height); - delta = x - dInfoPtr->curPixelOffset; - oneThird = lineWidth/3; - if (delta < 0) { - if (delta < -oneThird) { - dInfoPtr->newByteOffset = (x - lineWidth/2)/textPtr->charWidth; - } else { - dInfoPtr->newByteOffset -= ((-delta) + textPtr->charWidth - 1) - / textPtr->charWidth; - } - } else { - delta -= (lineWidth - width); - if (delta > 0) { - if (delta > oneThird) { - dInfoPtr->newByteOffset = (x - lineWidth/2)/textPtr->charWidth; + if (chunkPtr != NULL) { + (*chunkPtr->bboxProc)(chunkPtr, byteCount, + dlPtr->y + dlPtr->spaceAbove, + dlPtr->height - dlPtr->spaceAbove - dlPtr->spaceBelow, + dlPtr->baseline - dlPtr->spaceAbove, &x, &y, &width, + &height); + delta = x - dInfoPtr->curPixelOffset; + oneThird = lineWidth/3; + if (delta < 0) { + if (delta < -oneThird) { + dInfoPtr->newByteOffset = (x - lineWidth/2) + / textPtr->charWidth; } else { - dInfoPtr->newByteOffset += (delta + textPtr->charWidth - 1) + dInfoPtr->newByteOffset -= ((-delta) + textPtr->charWidth - 1) / textPtr->charWidth; } } else { - return TCL_OK; + delta -= (lineWidth - width); + if (delta > 0) { + if (delta > oneThird) { + dInfoPtr->newByteOffset = (x - lineWidth/2) + / textPtr->charWidth; + } else { + dInfoPtr->newByteOffset += (delta + textPtr->charWidth - 1) + / textPtr->charWidth; + } + } else { + return TCL_OK; + } } - }} + } dInfoPtr->flags |= DINFO_OUT_OF_DATE; if (!(dInfoPtr->flags & REDRAW_PENDING)) { dInfoPtr->flags |= REDRAW_PENDING; |